Bombesin antagonists
CA 2097192 C · Owner: The Administrators Of The Tulane Educational Fund · Inventors: Cai, Ren Z.; Schally, Andrew V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The novel pseudo polypeptides of this invention are potent bombesin antagonists. There are provided processes for their production, pharmaceutical compositions comprising said polypeptides and their use as pharmaceutically active agents. More particularly the present invention provides pseudopeptides comprising a nonapeptide moiety of formula (I): X-, A1-A2-A3-A4-A5-A6-A7-A8-psi-A9-Q wherein Q is NH2 or OQ1 where Q1 is , hydrogen C1-10alkyl, phenyl or phenyl-C7-10-alkyl; X is hydrogen or a single bond linking to A2 the acyl residue of an , organic acid, or a group of formula R1CO- wherein 1) R1 is hydrogen, C1-10alkyl, phenyl or phenyl-C7-10-alkyl; 2) R1CO- is a) R2.N(R3)-CO- wherein R2 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 15, 1991 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.